TASK 24-11-41-200-801
3. IDG Scavenge and Charge Filter - Inspection/Check
(Figure 202)
NOTE: This procedure is a scheduled maintenance task.
A. General
(1) This task inspects the integrated drive generator (IDG) scavenge and charge filter.
(2) When the differential pressure indicator (DPI) on the IDG is extended, the scavenge filter and
the IDG oil must be examined.
(3) If the scavenge filter and the IDG oil condition are not satisfactory, or the DPI Resets decal (if
installed) shows it is the 4th extension, the IDG must be replaced.
(4) If the scavenge filter and the IDG oil condition are satisfactory, and the DPI Resets decal (if
installed) shows it is not the 4th extension, the DPI can be reset.
NOTE: The DPI can be reset up to three times without removing the IDG, provided:
1. The filters are removed and the filter and filter covers are examined for metal debris.
2. No other indications of electrical power system problems are present, for example,
IDG fault indication or DP (feeder) fault.
3. The filters and oil are changed prior to resetting the DPI.
4. The DPI is inspected every 100 hours.
5. For any given IDG, the IDG is removed upon the discovery of the fourth DPI
extension.
6. Prior to implementation of this procedure on a new airplane, operators perform a
one-time oil and filter change, at some time between 125 and 500 operating hours.
B. References
Reference Title
12-13-21 P/B 301 INTEGRATED DRIVE GENERATOR (IDG) - SERVICING
24-11-11 P/B 401 INTEGRATED DRIVE GENERATOR (IDG) -
REMOVAL/INSTALLATION
24-11-21 P/B 401 IDG AIR/OIL COOLER - REMOVAL/INSTALLATION
73-11-06 P/B 401 IDG OIL COOLER - REMOVAL/INSTALLATION
C. Tools/Equipment
Reference Description
STD-205
Container - Oil Resistant, 5 U.S.-Gal (19 l)
D. Location Zones
Zone Area
410 Subzone - Engine 1
411 Engine 1 - Engine
420 Subzone - Engine 2
421 Engine 2 - Engine
E. Prepare for inspection/check
SUBTASK 24-11-41-010-002
(1) If the filter is not already removed, do this task: IDG Scavenge and Charge Filter - Removal,
TASK 24-11-41-000-801.
737-600/700/800/900
AIRCRAFT MAINTENANCE MANUAL
24-11-41
Page 204
D633A101-ILF Oct 15/2019
ECCN 9E991 BOEING PROPRIETARY - Copyright © Unpublished Work - See title page for details
EFFECTIVITY
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